163500420 has 48 divisors (see below), whose sum is σ = 459466560. Its totient is φ = 43441536.

The previous prime is 163500419. The next prime is 163500431. The reversal of 163500420 is 24005361.

It is a happy number.

163500420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12166 + ... + 21794.

It is an arithmetic number, because the mean of its divisors is an integer number (9572220).

Almost surely, 2^163500420 is an apocalyptic number.

163500420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163500420 is an abundant number, since it is smaller than the sum of its proper divisors (295966140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163500420 is a wasteful number, since it uses less digits than its factorization.

163500420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9924 (or 9922 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 163500420 is about 12786.7282758335. The cubic root of 163500420 is about 546.8139987251.

Adding to 163500420 its reverse (24005361), we get a palindrome (187505781).

The spelling of 163500420 in words is "one hundred sixty-three million, five hundred thousand, four hundred twenty".